Ventilator



Aug. 3 1926. I 1,594,680

6. T. MARKEY VENTILATOR Filed March 1, 1923 A TTORNEYS such Patented Aug. 3, 1926. v

UNETEE? STATES GEORGE THOMAS MARKEY, 013' FORT I 1,594,680 PATENT OFFICE.

TO JAMES VENTILATOR.

Application filed March 1, 1923.. Serial No. 621,989.

This invention rel tes to improvements in ventilators. I i

More particularly, this invention is confined to a type of ventilator in which a pipe extends upwardly from the roof of a build ing and is provided with a hood spaced from the end thereof to form an'annular opening for the egress of air-coming from the pipe, the opening being protected against wind and storm by an annular band spaced therefrom. Considerable; difliculty has heretofore been encountered in providing simple and adequate support for the band and the hood, the support frequently having been of construction that wind pressure upon the band and hood often crumpled it. It is important to provide a support which combines inherent strength with lightness, at the same time permitting a maximum of flow of air through the ventilator.

It is, therefore, the principal object of this invention to provide for the hood and band, supports which are of extremely light construction and of maximum strength, adapted to support them each from the ventilating pipe in spaced relation therewith and with each other in a manner to permit a maximum flow of air from the pipe and effectively to resist wind pressures tending to dislodge the hood and band.

A further object is to provide for the hood and storm band, supports which are of cheap and durable construction and which may be assembled with a maximum of speed and a minimum of cost.

In the drawings:

Fig. 1 is a plan view of the ventilator showing the braces supporting the storm band.

Fig. 2 is a side elevation of the top portion of the ventilator with a portion of the storm band broken away.

Fig. 3 is a perspective view of one of the brackets.

Like parts are identified by the same reference characters throughout the several views.

The ventilating pipe 1 provided with conical-shaped flared'end 2 having a vertically extending flange 3 is provided with a conical hood 4 having a downwardly extending flange 5 concentric with flange 3. The hood is spaced from the flared end 2 to form about the end an opening 6 through which the air, coming from the ventilating pipe, may pass out into the open. Radially spaced from the opening is an annular storm band 7 adapted to protect the opening against wind.

The hood and storm band are supported from the ventilatingpipe by U-shaped brackets 8.' Each of the brackets are provided with a storm band engaging base 9 and flange engaging feet 10 to which the storm band and flanges 3 and 5 are riveted, respectively.- .The bases 9 and feet 10. are connected together by the legs 11 which diverge from the bases 9. 'l The construction of the bracket, shown in Fig. 3, is particularly to be noted. in that its base 9, legs 11 and feet 10 are approximately of the same height, this height being substantially coextensive with the combined height of the opening 6 and flanges 3 and 5. The base 9, which is secured to the band longitudinally thereof, affords a considerable bearing surface for the band. The feet 10 when secured to the flanges, as shown, maintain the hood in spaced relation to the pipe. The legs 11, which extend in vertical planes, readily resist all strains thereon which act vertically, their strength being due to their height. All torsional strains are absorbed by the legs, which are divergent; the angularity between the legs places one leg in opposition to the other when any movement of either tends to take place about a vertical axis. The brackets are maintained in their vertical positions by the flange 3 of hood 4. This flange binds all the brackets together and thus puts into opposition the stresses resulting from the weight of band 7.

A ventilating pipe has, therefore, been provided with a hood and a storm band attached thereto by very simple means comprising U-shaped brackets which are inherently stable and which are so secured to and positioned about the flared end of the pipe that they will adequately resist all of the strains and stresses produced by the pressure of wind upon the hood and band.

Strength is secured, however, without increasing the size of the brackets to such an extent as to interfere with freedom of air circulation and without using materials of such weight as to impose undue loads upon the supporting pipe 1, which, in most cases, is merely sheet metal and is unable to sustain great loads. bines in a thoroughly satisfactory manner strength, durability, and lightness with the In fact, this structure comcapacity topermit air circulation to occur wholly unimpeded.

I claim:

1. A ventilating pipe provided with a flared, conical end having an upwardly extending flange, a conical hood provided with a downwardly extending flange axially spaced from said first mentioned flange, a storm band radially, spaced from said flanges, U-shaped brackets secured to said band and provided with legs, eachof said legs being provided with end portions rigidly connected with both of said flanges and adapted to maintain said flanges in spaced relation.

2. The combination with a ventilating pipe [provided with afla-red end having a vert cally extending I flange, of a hood having a downwlardly extending flange concentric with the first; flange and spaced therefrom, a bandspaced from saidwflanges having its axis substantially concentric with the axis of said flanges, and a plurality of brackets adaptedto support said hood and band from said first mentioned flange,each of said brackets, comprising a; centrally disposed portioni's'ecured longitudinally of said band,

legs integral with said central portion and diverging inwardly therefrom, and feet upon said legs each of said feet being secured to both said flanges.

3. In a "ventilating tion with a pipe, a hood, and an annular band, said hood and band being spaced from each other and from said pipe; of a plurality of brackets each comprising a sheet of metalhaving a band to provide a central portion secured to said band, legs divergent from said portion in a horizontal plane, and feet attached to said legs and projecting oppositely from each other and riveted at vertically spaced points to said pipe and to said hood, whereby said bracket is adapted to maintain said hood and said band in spaced relation to eachother and to said Pipe, said intermediate portion, 1 said legs, and said feet being disposed in angularly related planes all of which are vertical whereby to afford a rigid bracket having portions adapted to receive rivets for permanent condevice, the c0mbina-' nection to said pipe and to said hood as aforesaid. I

GEORGE THOMAS MARKEYQ 

